Modular frame for a backpack sprayer



FIG. 1 is a front perspective view of a modular frame for a backpack sprayer of our new design shown in environment;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict portions of the modular frame for a backpack sprayer that form no part of the claim. 

CLAIM The ornamental design of a modular frame for a backpack sprayer, as shown and described. 